219 



LYTHRACEAE: GUPHEA. 



220 



J_J_ Semina margine obtusa. 



T Folia sessilia vel subsessilia; petala 

 nunquam persistentia. 

 | Glandula subtu8 convexa et plerum- 

 que obtuse carinata, supra semper 

 fere plana vel concava 



Subs- 4. HILAIREA. 

 " Glandula erecta, dimidium ovarium 



fere aequans, teres . . . Series 1. 

 s Glandula horizontalis vel deflexa. 

 A Calcar breve. 



Antherae omnes normales Series 2. 

 lAntherae staminum duorum dor- 

 salium obsoletae, ceterae nor- 

 males Series 3. 



* Calcar circiter 2—3 mm. longum, 



subascendens, subangustatum 



Series 4. 

 | j Glandula subtus excavata , supra 

 maxime convexa, valde deflexa, ob- 

 tusissima; ovula 3, rarissime 4 — 5 



Subs. 5. TRISPERMUM. 

 " Petala violacea vel purpurea. 

 A Calcar haud dilatatum nee incurva- 

 tum. Stamina plerumque inclusa 



Series 1. 

 * Calcar subincurvum seu versus pe- 

 dicellum leviter dilatatum, rotun- 

 datum. Stamina plerumque sub- 

 exserta Series 2. 



* Petala flava. (Folia basi cordata 



exacte sessilia) Series 3. 



| | Folia saltern inferiora petiolis plerum- 

 que longiusculis insidentia; interdum 

 petioli breves, sed simul petala etiam 

 in calyce fructifero persistentia 



Subs. 6. PSEUDOCIRCAEA. 



lOvula 17—21 Series 1, 



f Ovula 3—10 Series 2. 



XX Ovula circiter 50. (Species Cubensis) 



Subs. 7. PSEUDOLOBELIA. 



ft Calyx 17—34, raro 13 — 17 mm. longus, saepe coc- 

 cineus; petala plerumque 6, calyce multoties 

 breviora, raro omnia magna, saepe nulla; sta- 

 mina semper ad ties quartas calycis partes vel 

 altius inserta. 

 X Calyx crassus, dorso convexus, fauce vix am- 



pliatus Sect. V. MELVILLA. 



* Flores oppositi ternive , in racemis distinctis 

 simplicibus; petala nulla Subs. 1. EUMELVILLA. 

 ** Flores alterni. 



Ovula 5—23 ; ovarium haud gibbum. 

 J_ Lobi calycini margine haud ciliati, inter- 

 dum brevissime hirtelli 



Subs. 2. PACHYCALYX. 

 ~T Petala 6 ; inflorescentia foliosa. 



Calyx 13—16 mm. longus; stylus ovarii 



duplicemlongitudinem aequans Series 1. 

 [Calyx 20 — 27 mm. longus ; stylus ovarii 

 triplicem quadruplicemve longitudi- 

 nem aequans ...... Series 2. 



XT Petala nulla ; inflorescentia hypso- 



phyllis instructa . . . Series 3. 



| | Lobi calycini margine ciliis longis, 



basi tanquam tuberculatis, apice 



haud glanduliferis densissimis mu- 



niti. (Species omnes mexicanae) 



Subs. 3. ERYTHROCALYX. 

 "J" Petala manifesta , plerumque 6 

 parva, subaequalia, raro magna 



Series 1. 

 | J Petala nulla vel 6 minutissima 



subulata Series 2. 



00 Ovula 45— 120; ovarium dorso infra sty- 

 lum gibbere plerumque manifesto in- 

 structum. (Species mexicanae) 



Subs. 4. POLYSPERMUM. 

 XX Calyx inferne gracillimus vel gracilis, 

 plerumque a medio ad apicem dilatatus. 

 (Species mexicanae et centro-america- 



nae) Sect. VII. -LEPTOCALYX. 



* Petala 6 subaequalia, magna; calyx 

 13 — 20 mm. longus, incurvatim cal- 

 caratus, intus rugosus . . . Series 1. 

 ** Petala 6 maxime inaequalia vel 2; ca- 

 lyx intus haud rugosus. 

 Stamina 11 ; calyx 24—34 mm. longus, 

 ecalcaratus, intus fundo retrorsum 



hirtus; petala 2 Series 2. 



00 Stamina 9; calyx 15—27 mm. longus, 



incurvatim calcaratus, intus glaber; 



petala 6 (an semper?) . . . Series 3. 



§§. Calycis nunquam coccinei lobus dorsalis maxi- 



mus, valde productus. (Species mexicanae, 



unica boreali-americana) Sect. VI. HETERODON. 



fSquamulae infra petala 2 dorsalia nullae 



vel subnullae . . . Subs. 1. LOPHOSTOMUM. 

 X Herbae annuae ; petala 6. 



* Staminum episepalorum duo dorsalia 



medio valde barbata, summo apice 

 glabra; calyx 5-12 mm. longus Series 1. 



* Staminum episepalorum duo dorsalia in- 



ferne glabra, apice densissime penicilli- 

 formi-barbata, antheris inter pilos oc- 

 cultis ; calyx 8 — 21 mm. longus Series 2. 

 XX Herbae perennes; petala 2, rarius 6; ca- 

 lyx 16—40 mm. longus . . . Series 3. 

 ft Squamulae infra petala 2 dorsalia majusculae, 

 complanatae , verticaliter insertae ; calyx 

 9—12 mm. longus . Subs. 2. GLOSSOSTOMUM. 

 X Herbae annuae ; calyx intus infra stamina 



glaber vel subglaber; ovula 3— 6 Series 1. 

 XX Herbae perennes; calyx intus infra sta- 

 mina pilosus; ovula 7 — 10 . . Series 2. 

 b. Staminum duorum brevium nervi intus infra stamina 

 ad costarum instar maxime prominentes ovarii- 

 que dorso adpressi . . . Sect. VIII. DIP LOFTY CHI A. 

 a. Calycis costae 2 interior es pilis retrorsum versis 



hirtelli Subs. 1. TRICHOPTYCHIA/ 



(1. Calycis costae 2 interiores glabrae 



Subs. 2. LEIOPTYCHIA. 



